A chemist who studies water samples did a demonstration of how to test for lead in water. She added a clear solution of potassium iodide to a clear solution of lead nitrate. Then a yellow swirling solid formed in the liquid. What is most likely true about the yellow solid? A. It is a new substance with different properties. B. It is solid lead nitrate. C. It is solid potassium iodide. D. It was secretly added to the test tube by the scientist.
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